<template>
  <div class="list" ref="wrapper">
    <div>
            <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{this.currentCity}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper" v-for="item of hot" :key="item.id" @click="handleCityClick(item.name)">
            <div class="button">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div class="area" v-for="(item,key) of cities" :key="key" :ref="key">
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
          <div class="item border-bottom" v-for="innerItem of item" :key="innerItem.id" @click="handleCityClick(innerItem.name)">{{innerItem.name}}</div>

        </div>

      </div>
    </div>
  </div>
</template>
<script>
import Bscroll from "better-scroll";
import {mapState} from 'vuex'
export default {
  name: "CityList",
  props :{
    hot:Array,
    cities:Object,
    letter:String
  },
  computed  :{
    ...mapState({
      currentCity:'city'
    })
  },
  methods:{
    handleCityClick(city){
      this.$store.commit('changeCity',city)
      this.$router.push('/')
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper);
  },
  watch:{
    letter (){
      if(this.letter){
        const element=this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  }
};
</script>
<style>
.title {
  line-height: 0.54rem;
  background: #eee;
  padding-left: 0.2rem;
  color: #666;
  font-size: 0.26rem;
}
.border-topbottom::before {
  border-color: #ccc;
}
.border-topbottom::after {
  border-color: #ccc;
}
.border-topbottom::before {
  border-color: #ccc;
}
.button-list {
  padding: 0.1rem 0.6rem 0.1rem 0.1rem;
  overflow: hidden;
}
.button-wrapper {
  float: left;
  width: 33.33%;
}
.button {
  padding: 0.1rem 0;
  text-align: center;
  margin: 0.1rem;
  border: 0.02rem solid #ccc;
  border-radius: 0.06rem;
}
.item-list .item {
  line-height: 0.76rem;
  padding-left: 0.2rem;
}
.list {
  position: absolute;
  overflow: hidden;
  top: 1.58rem;
  left: 0;
  right: 0;
  bottom: 0;
}
</style>


